KS2 Algorithms Jam Sandwich Robot - Outstanding Computing Interview Lesson

This Key Stage 2 computing lesson introduces pupils to algorithms and debugging through the well‑known Jam Sandwich Bot activity. Designed for Years 3–4, the session helps children understand how precise instructions work in programming and supports key computing objectives in a practical, memorable way. The lesson is suitable for observations, interviews or short 20–45 minute sessions.

What’s Included:
✔ Detailed lesson plan with clear structure and timings
✔ PowerPoint presentation introducing key vocabulary
✔ Debugging worksheet for paired or independent work
✔ Printable keyword posters for display or recap

Lesson Overview:
★ Starter: Introduces key computing terms and explores what an algorithm is.
★ Main: Pupils “program” the teacher to make a jam sandwich, highlighting the need for clear, logical instructions. This is followed by a debugging task where pupils correct simple algorithms.
★ Plenary: Class reflection on what worked well, common errors and how debugging improves accuracy.

Why It’s Useful:
✔ Differentiated for mixed‑ability classes
✔ Supports KS2 computing and programming objectives
✔ Fully resourced for 20–45 minute lessons
✔ Printable and editable materials

Ideal for KS2 computing lessons on algorithms, interview or observation lessons, problem‑solving sessions or as an introduction to programming. Suitable for Year 3 and Year 4, with resources adaptable across KS2.

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